Table 1.

Normalized Sums of 249/275/301 Intensities for NCEs Stepped by 5.

Standard Compound	25 +/− 5	30 +/− 5	35 +/− 5	40 +/− 5	45 +/− 5
castalagin	61.4	88.5	100	95.4	84.2
vescalagin	71.3	94.7	100	98.6	84.8
acutissimin A	45.7	72.7	100	96.2	97.5
epiacutissimin A	46.4	78.5	100	96.8	95.5
roburin A	50.5	81.2	100	99.3	95.2
roburin D	48.9	71.9	86	100	98.5
roburin B/C	62.7	89	100	99.9	90.6
grandinin	68.8	90	100	96.3	83.2
roburin E	63.1	79.9	94.2	100	77
$\overline{\mathrm{x}}$	57.64	82.93	97.8	98.06	89.61
σ	9.85	8.02	4.82	1.87	7.59